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Finding the Fourth Proportional to 578,060.40, 867,090.60 and 311,683.80

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Solution

The fourth proportional to 578,060.40, 867,090.60 and 311,683.80 is: 467,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,060.40 : 867,090.60 = 311,683.80 : x
  2. Step 2: Convert to fraction form
    578,060.40/867,090.60 = 311,683.80/x
  3. Step 3: Cross multiply
    578,060.40x = 867,090.60 × 311,683.80
  4. Step 4: Simplify right side
    578,060.40x = 270,258,093,152.28
  5. Step 5: Solve for x
    x = 270,258,093,152.28/578,060.40
  6. Step 6: Final answer
    x = 467,525.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.